lnbh221 STMicroelectronics, lnbh221 Datasheet - Page 2

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lnbh221

Manufacturer Part Number
lnbh221
Description
Dual Lnb Supply And Control Ic With Step-up Converter And I2c Interface
Manufacturer
STMicroelectronics
Datasheet

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Contents
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical application circuits for each section : A and B . . . . . . . . . . . . . 7
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1
5.2
5.3
5.4
5.5
5.6
LNBH221 software description (same for both section) . . . . . . . . . . . 13
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Thermal design notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Typical performance characteristics (of each section) . . . . . . . . . . . . 19
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
I2C Bus Interface (one for each section) . . . . . . . . . . . . . . . . . . . . . . . . . 10
Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Transmission without acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . .11
Interface Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System register (SR, 1 Byte) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Transmitted data (I2C BUS write mode) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Received data (I2C bus READ MODE) . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power-On I2C interface reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Address Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DiSEqCTM Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LNBH221

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